[32/51] [partial] hbase-site git commit: Published site at 8bf966c8e936dec4d83bcbe85c5aab543f14a0df.

Wed, 05 Dec 2018 06:53:33 -0800 

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/27555316/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
----------------------------------------------------------------------
diff --git 
a/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html 
b/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
index 7b680e9..a730a53 100644
--- 
a/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
+++ 
b/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
@@ -73,55 +73,54 @@
 <span class="sourceLineNo">065</span>      throw new 
IllegalStateException("hbase:meta must be initialized first before we can " +<a 
name="line.65"></a>
 <span class="sourceLineNo">066</span>          "assign out its replicas");<a 
name="line.66"></a>
 <span class="sourceLineNo">067</span>    }<a name="line.67"></a>
-<span class="sourceLineNo">068</span>    ServerName metaServername =<a 
name="line.68"></a>
-<span class="sourceLineNo">069</span>        
this.master.getMetaTableLocator().getMetaRegionLocation(this.master.getZooKeeper());<a
 name="line.69"></a>
-<span class="sourceLineNo">070</span>    for (int i = 1; i &lt; numReplicas; 
i++) {<a name="line.70"></a>
-<span class="sourceLineNo">071</span>      // Get current meta state for 
replica from zk.<a name="line.71"></a>
-<span class="sourceLineNo">072</span>      RegionState metaState = 
MetaTableLocator.getMetaRegionState(master.getZooKeeper(), i);<a 
name="line.72"></a>
-<span class="sourceLineNo">073</span>      RegionInfo hri = 
RegionReplicaUtil.getRegionInfoForReplica(<a name="line.73"></a>
-<span class="sourceLineNo">074</span>          
RegionInfoBuilder.FIRST_META_REGIONINFO, i);<a name="line.74"></a>
-<span class="sourceLineNo">075</span>      
LOG.debug(hri.getRegionNameAsString() + " replica region state from zookeeper=" 
+ metaState);<a name="line.75"></a>
-<span class="sourceLineNo">076</span>      if 
(metaServername.equals(metaState.getServerName())) {<a name="line.76"></a>
-<span class="sourceLineNo">077</span>        metaState = null;<a 
name="line.77"></a>
-<span class="sourceLineNo">078</span>        
LOG.info(hri.getRegionNameAsString() +<a name="line.78"></a>
-<span class="sourceLineNo">079</span>          " old location is same as 
current hbase:meta location; setting location as null...");<a 
name="line.79"></a>
-<span class="sourceLineNo">080</span>      }<a name="line.80"></a>
-<span class="sourceLineNo">081</span>      // These assigns run inline. All is 
blocked till they complete. Only interrupt is shutting<a name="line.81"></a>
-<span class="sourceLineNo">082</span>      // down hosting server which calls 
AM#stop.<a name="line.82"></a>
-<span class="sourceLineNo">083</span>      if (metaState != null &amp;&amp; 
metaState.getServerName() != null) {<a name="line.83"></a>
-<span class="sourceLineNo">084</span>        // Try to retain old 
assignment.<a name="line.84"></a>
-<span class="sourceLineNo">085</span>        assignmentManager.assign(hri, 
metaState.getServerName());<a name="line.85"></a>
-<span class="sourceLineNo">086</span>      } else {<a name="line.86"></a>
-<span class="sourceLineNo">087</span>        assignmentManager.assign(hri);<a 
name="line.87"></a>
-<span class="sourceLineNo">088</span>      }<a name="line.88"></a>
-<span class="sourceLineNo">089</span>    }<a name="line.89"></a>
-<span class="sourceLineNo">090</span>    
unassignExcessMetaReplica(numReplicas);<a name="line.90"></a>
-<span class="sourceLineNo">091</span>  }<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>  private void 
unassignExcessMetaReplica(int numMetaReplicasConfigured) {<a name="line.93"></a>
-<span class="sourceLineNo">094</span>    final ZKWatcher zooKeeper = 
master.getZooKeeper();<a name="line.94"></a>
-<span class="sourceLineNo">095</span>    // unassign the unneeded replicas 
(for e.g., if the previous master was configured<a name="line.95"></a>
-<span class="sourceLineNo">096</span>    // with a replication of 3 and now it 
is 2, we need to unassign the 1 unneeded replica)<a name="line.96"></a>
-<span class="sourceLineNo">097</span>    try {<a name="line.97"></a>
-<span class="sourceLineNo">098</span>      List&lt;String&gt; 
metaReplicaZnodes = zooKeeper.getMetaReplicaNodes();<a name="line.98"></a>
-<span class="sourceLineNo">099</span>      for (String metaReplicaZnode : 
metaReplicaZnodes) {<a name="line.99"></a>
-<span class="sourceLineNo">100</span>        int replicaId = 
zooKeeper.getZNodePaths().getMetaReplicaIdFromZnode(metaReplicaZnode);<a 
name="line.100"></a>
-<span class="sourceLineNo">101</span>        if (replicaId &gt;= 
numMetaReplicasConfigured) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span>          RegionState r = 
MetaTableLocator.getMetaRegionState(zooKeeper, replicaId);<a 
name="line.102"></a>
-<span class="sourceLineNo">103</span>          LOG.info("Closing excess 
replica of meta region " + r.getRegion());<a name="line.103"></a>
-<span class="sourceLineNo">104</span>          // send a close and wait for a 
max of 30 seconds<a name="line.104"></a>
-<span class="sourceLineNo">105</span>          
ServerManager.closeRegionSilentlyAndWait(master.getClusterConnection(),<a 
name="line.105"></a>
-<span class="sourceLineNo">106</span>              r.getServerName(), 
r.getRegion(), 30000);<a name="line.106"></a>
-<span class="sourceLineNo">107</span>          ZKUtil.deleteNode(zooKeeper, 
zooKeeper.getZNodePaths().getZNodeForReplica(replicaId));<a name="line.107"></a>
-<span class="sourceLineNo">108</span>        }<a name="line.108"></a>
-<span class="sourceLineNo">109</span>      }<a name="line.109"></a>
-<span class="sourceLineNo">110</span>    } catch (Exception ex) {<a 
name="line.110"></a>
-<span class="sourceLineNo">111</span>      // ignore the exception since we 
don't want the master to be wedged due to potential<a name="line.111"></a>
-<span class="sourceLineNo">112</span>      // issues in the cleanup of the 
extra regions. We can do that cleanup via hbck or manually<a 
name="line.112"></a>
-<span class="sourceLineNo">113</span>      LOG.warn("Ignoring exception " + 
ex);<a name="line.113"></a>
-<span class="sourceLineNo">114</span>    }<a name="line.114"></a>
-<span class="sourceLineNo">115</span>  }<a name="line.115"></a>
-<span class="sourceLineNo">116</span>}<a name="line.116"></a>
+<span class="sourceLineNo">068</span>    ServerName metaServername = 
MetaTableLocator.getMetaRegionLocation(this.master.getZooKeeper());<a 
name="line.68"></a>
+<span class="sourceLineNo">069</span>    for (int i = 1; i &lt; numReplicas; 
i++) {<a name="line.69"></a>
+<span class="sourceLineNo">070</span>      // Get current meta state for 
replica from zk.<a name="line.70"></a>
+<span class="sourceLineNo">071</span>      RegionState metaState = 
MetaTableLocator.getMetaRegionState(master.getZooKeeper(), i);<a 
name="line.71"></a>
+<span class="sourceLineNo">072</span>      RegionInfo hri = 
RegionReplicaUtil.getRegionInfoForReplica(<a name="line.72"></a>
+<span class="sourceLineNo">073</span>          
RegionInfoBuilder.FIRST_META_REGIONINFO, i);<a name="line.73"></a>
+<span class="sourceLineNo">074</span>      
LOG.debug(hri.getRegionNameAsString() + " replica region state from zookeeper=" 
+ metaState);<a name="line.74"></a>
+<span class="sourceLineNo">075</span>      if 
(metaServername.equals(metaState.getServerName())) {<a name="line.75"></a>
+<span class="sourceLineNo">076</span>        metaState = null;<a 
name="line.76"></a>
+<span class="sourceLineNo">077</span>        
LOG.info(hri.getRegionNameAsString() +<a name="line.77"></a>
+<span class="sourceLineNo">078</span>          " old location is same as 
current hbase:meta location; setting location as null...");<a 
name="line.78"></a>
+<span class="sourceLineNo">079</span>      }<a name="line.79"></a>
+<span class="sourceLineNo">080</span>      // These assigns run inline. All is 
blocked till they complete. Only interrupt is shutting<a name="line.80"></a>
+<span class="sourceLineNo">081</span>      // down hosting server which calls 
AM#stop.<a name="line.81"></a>
+<span class="sourceLineNo">082</span>      if (metaState != null &amp;&amp; 
metaState.getServerName() != null) {<a name="line.82"></a>
+<span class="sourceLineNo">083</span>        // Try to retain old 
assignment.<a name="line.83"></a>
+<span class="sourceLineNo">084</span>        assignmentManager.assign(hri, 
metaState.getServerName());<a name="line.84"></a>
+<span class="sourceLineNo">085</span>      } else {<a name="line.85"></a>
+<span class="sourceLineNo">086</span>        assignmentManager.assign(hri);<a 
name="line.86"></a>
+<span class="sourceLineNo">087</span>      }<a name="line.87"></a>
+<span class="sourceLineNo">088</span>    }<a name="line.88"></a>
+<span class="sourceLineNo">089</span>    
unassignExcessMetaReplica(numReplicas);<a name="line.89"></a>
+<span class="sourceLineNo">090</span>  }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span>  private void 
unassignExcessMetaReplica(int numMetaReplicasConfigured) {<a name="line.92"></a>
+<span class="sourceLineNo">093</span>    final ZKWatcher zooKeeper = 
master.getZooKeeper();<a name="line.93"></a>
+<span class="sourceLineNo">094</span>    // unassign the unneeded replicas 
(for e.g., if the previous master was configured<a name="line.94"></a>
+<span class="sourceLineNo">095</span>    // with a replication of 3 and now it 
is 2, we need to unassign the 1 unneeded replica)<a name="line.95"></a>
+<span class="sourceLineNo">096</span>    try {<a name="line.96"></a>
+<span class="sourceLineNo">097</span>      List&lt;String&gt; 
metaReplicaZnodes = zooKeeper.getMetaReplicaNodes();<a name="line.97"></a>
+<span class="sourceLineNo">098</span>      for (String metaReplicaZnode : 
metaReplicaZnodes) {<a name="line.98"></a>
+<span class="sourceLineNo">099</span>        int replicaId = 
zooKeeper.getZNodePaths().getMetaReplicaIdFromZnode(metaReplicaZnode);<a 
name="line.99"></a>
+<span class="sourceLineNo">100</span>        if (replicaId &gt;= 
numMetaReplicasConfigured) {<a name="line.100"></a>
+<span class="sourceLineNo">101</span>          RegionState r = 
MetaTableLocator.getMetaRegionState(zooKeeper, replicaId);<a 
name="line.101"></a>
+<span class="sourceLineNo">102</span>          LOG.info("Closing excess 
replica of meta region " + r.getRegion());<a name="line.102"></a>
+<span class="sourceLineNo">103</span>          // send a close and wait for a 
max of 30 seconds<a name="line.103"></a>
+<span class="sourceLineNo">104</span>          
ServerManager.closeRegionSilentlyAndWait(master.getClusterConnection(),<a 
name="line.104"></a>
+<span class="sourceLineNo">105</span>              r.getServerName(), 
r.getRegion(), 30000);<a name="line.105"></a>
+<span class="sourceLineNo">106</span>          ZKUtil.deleteNode(zooKeeper, 
zooKeeper.getZNodePaths().getZNodeForReplica(replicaId));<a name="line.106"></a>
+<span class="sourceLineNo">107</span>        }<a name="line.107"></a>
+<span class="sourceLineNo">108</span>      }<a name="line.108"></a>
+<span class="sourceLineNo">109</span>    } catch (Exception ex) {<a 
name="line.109"></a>
+<span class="sourceLineNo">110</span>      // ignore the exception since we 
don't want the master to be wedged due to potential<a name="line.110"></a>
+<span class="sourceLineNo">111</span>      // issues in the cleanup of the 
extra regions. We can do that cleanup via hbck or manually<a 
name="line.111"></a>
+<span class="sourceLineNo">112</span>      LOG.warn("Ignoring exception " + 
ex);<a name="line.112"></a>
+<span class="sourceLineNo">113</span>    }<a name="line.113"></a>
+<span class="sourceLineNo">114</span>  }<a name="line.114"></a>
+<span class="sourceLineNo">115</span>}<a name="line.115"></a>

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